Your oil furnace or Heating and A/C idea will work more efficiently if you minimize heat loss.
Your heating bills will increase significantly if heat escapes from your house.
If you want to reduce your electric bills or keep the current home warmer, you need to minimize heat loss. Heat escapes through doors, windows, gaps, or because your oil furnace or Heating and A/C is malfunctioning. The windows can be cold due to the outside hot and cold temperatures, and when moderate air comes in contact with them, they affect the internal air by lowering heat. Ensure that your curtains are closed while the people I was with and I were in the nighttime hours and that your windows are getting sun each morning before reopening them to further limit that influence. Keep your current home moderate by minimizing heat loss through windows. Older properties may not have enough insulation. The attic might be losing heat, forcing your oil furnace to work harder than it should, and possibly requiring oil furnace repair. If you do not minimize heat loss here, your electric bill will increase significantly. Inspect the insulation in the attic to see if it is even with the joists or below them. You will honestly need to install some additional insulation if it is below them. Occasionally, gaps between windows and doors are more noticeable and visible to the human eye, or wide enough to recognize gusts flowing in, however not constantly. Check your doors and windows to see if any gaps need to be filled with weather sealing, like attic insulation, gaps in your windows and doors can make your oil furnace work harder, decreasing the likelihood of it cutting down.